[CI] Consolidate some tests (K, L) (#8201)

tests/components/lilygo_t5_47/common.yaml

@@ -0,0 +1,24 @@
+i2c:
+  - id: i2c_lilygo_t5_47
+    scl: ${scl_pin}
+    sda: ${sda_pin}
+
+display:
+  - platform: ssd1306_i2c
+    id: ssd1306_display
+    model: SSD1306_128X64
+    reset_pin: ${reset_pin}
+    pages:
+      - id: page1
+        lambda: |-
+          it.rectangle(0, 0, it.get_width(), it.get_height());
+
+touchscreen:
+  - platform: lilygo_t5_47
+    id: lilygo_touchscreen
+    interrupt_pin: ${interrupt_pin}
+    display: ssd1306_display
+    on_touch:
+      - logger.log:
+          format: Touch at (%d, %d)
+          args: [touch.x, touch.y]